CN201424114Y - A power hybrid input transmission device with a differential mechanism - Google Patents

Abstract

A power mixing input transmission device with a differential mechanism, including a differential mechanism, which includes a right differential bevel gear, a left differential bevel gear, a planetary bevel gear and a planetary bevel gear shaft, and the planetary bevel gear shaft is sleeved on the On the pedal shaft, the two ends of the planetary bevel gear shaft are respectively sleeved with planetary bevel gears, and the left and right differential bevel gears are sleeved on the pedal shaft and mesh with the planetary bevel gears; There is also a worm gear seat, which is fixedly connected with the worm wheel of the worm gear assembly, and a first ratchet pawl mechanism is arranged between the worm wheel seat and the left differential bevel gear; the pedal shaft is also covered with a planet frame, the shaft of the planetary bevel gear is fixed on the planetary carrier, a second ratchet pawl mechanism is provided between the right differential bevel gear and the planetary carrier, one end of the output sleeve is fitted with a sprocket, and the other end Connect with the planet carrier. Realize that the power of pedal drive and electric drive is uniformly output to the sprocket.

Description

A power hybrid input transmission device with a differential mechanism

technical field

The utility model relates to a transmission part of an electric power-assisted vehicle, in particular to a power mixing input transmission device with a differential mechanism suitable for the electric power-assisted vehicle.

Background technique

Most of the electric mopeds currently on the market are driven by in-wheel motors. Since the use of in-wheel motors can save complex transmission mechanisms, the structure is relatively simple. The existing hub motor type electric bicycle is to change the hub of one of the wheels of an ordinary bicycle into a hub motor, and the pedal drives the rear wheel through a sprocket, a chain and a one-way flywheel. It can be seen that the motor is driven without a chain. , so the pedal drive and the electric motor are independent of each other, which determines that the hub motor type electric moped is not suitable for the development of additional functions such as gear shifting, clutch control, power generation exercise bikes, etc., and the expansion of functions is not flexible enough; in addition, when mass production At the same time, due to the manufacturing process of the hub motor, compared with the traditional low-voltage DC permanent magnet motor, its production efficiency is low, so the cost is relatively high, which restricts the output to a certain extent. Except for electric mopeds using in-wheel motors, the other transmission forms are only wheel-side motors. However, the wheel-side motors are also separated from the motor and pedals, and the electric drive and pedal drive are not related to each other.

Chinese patent application (Application No.: 200720302677.6) is a double-input worm gear transmission, which outputs power to the sprocket of the electric bicycle through its own one-way ratchet device, thereby realizing pedal drive and motor drive, due to the transmission mechanism The structure is compact, the space occupied is small, and the production cost is greatly reduced when used in conjunction with ordinary motors, and additional functions such as gear shifting, clutch control, and power generation exercise bikes can be developed. However, the technical solution of this patent application also has the following defects: since the power is output to the sprocket of the electric bicycle through the respective one-way ratchet devices, the power output of the pedal drive and the motor drive cannot be perfectly combined , There will be phenomena such as motor drive tending to be ahead of pedal drive or pedal drive covering motor drive, which is not conducive to the rider's good control of the electric moped.

Utility model content

The purpose of this utility model is to provide a power hybrid input transmission device with a differential mechanism, which can be used in combination with a traditional DC motor to output the electric drive and pedal drive power to the sprocket to drive the vehicle, so that the pedal The perfect combination of power and motor power is conducive to the rider's good control of the vehicle.

The technical solution of the utility model can be realized through the following technical measures. A power hybrid input transmission device with a differential mechanism, including a housing, a pedal shaft, a sprocket, an output sleeve and a worm gear assembly, is characterized in that : It also includes a differential mechanism, the differential mechanism includes a right differential bevel gear, a left differential bevel gear, a planetary bevel gear and a planetary bevel gear shaft, and the planetary bevel gear shaft is sleeved on the On the pedal shaft, the two ends of the planetary bevel gear shaft are respectively sleeved with planetary bevel gears, and the left and right differential bevel gears are sleeved on the pedal shaft and mesh with the planetary bevel gears. The bevel gear is fixedly connected with the pedal shaft; the pedal shaft is also covered with a worm gear seat, which is adjacent to the left differential bevel gear, and the worm gear seat is fixedly connected with the worm gear of the worm gear assembly. A first ratchet and pawl mechanism is provided between the differential bevel gears; a planetary carrier is set on the pedal shaft, which is adjacent to the right differential bevel gear, and the planetary bevel gear shaft is fixed on the planetary carrier , a second ratchet pawl mechanism is provided between the right differential bevel gear and the planet carrier; the output sleeve is sleeved on one end of the pedal shaft, one end of the output sleeve is sleeved with a sprocket, and the other end Connect with the planet carrier.

The utility model uses a differential mechanism to unify the power of the pedal drive and the electric drive to the sprocket, so that the phenomenon that the motor drive tends to be ahead of the pedal drive or the pedal drive covers the motor drive will not occur, which is more conducive to cycling The operator has flexible and good handling of the vehicle.

The requirement for the first ratchet and pawl mechanism to do one-way movement is: when the worm gear seat rotates forward, it can drive the left differential bevel gear to rotate forward at the same time, but when the left differential bevel gear rotates forward, it cannot drive the worm gear seat forward. Turning, specifically, when pedaling alone, the left differential bevel gear will not drive the worm gear seat and worm gear; while the second ratchet pawl mechanism can drive the planet carrier forward while the right differential bevel gear rotates forward rotation, but the planetary carrier cannot drive the right differential bevel gear to rotate forward.

As an improvement of the utility model, the pedal shaft is also provided with a third ratchet and pawl mechanism for preventing the pedal shaft from reversing. This mechanism can avoid the following phenomenon: when the motor is driven alone, the left differential bevel gear drives the right differential bevel gear to rotate through the planetary bevel gear, and then drives the pedal shaft to reverse.

As an embodiment of the present invention, the third ratchet and pawl mechanism includes a ratchet, a ratchet, and an electromagnet whose current is controlled by a control circuit. The ratchet is fixedly sleeved on the pedal shaft, and The worm wheel seat is arranged adjacently, the ratchet is an external ratchet and is opposite to the sprocket, the ratchet is fixed on the inner wall of the housing through the rotating shaft, and the electromagnet is arranged on one side of the ratchet. The iron core in the electromagnet reciprocates horizontally in the coil to push the pawl to engage with the ratchet wheel or to disengage from the pawl. The pawl is engaged on the ratchet under the action of the electromagnet, and the pedal shaft is prevented from reversing through the ratchet. After the current disappears, the iron core moves in the opposite direction and the pawl is released. Due to the reset action of the torsion spring on the pawl, the ratchet The pawl disengages from the ratchet.

As an embodiment of the present invention, the first ratchet and pawl mechanism includes a pawl and a ratchet, the ratchet is a worm wheel seat, and is an inner ratchet, and the pawl is installed on the outer wall of the left differential bevel gear On, that is, the left differential bevel gear is used as the ratchet seat.

As an embodiment of the present invention, the second ratchet and pawl mechanism includes a pawl and a ratchet, the ratchet is the planet carrier, and is an inner ratchet, and the pawl is installed on the outer wall of the right differential bevel gear On, that is, the right differential bevel gear is used as the ratchet seat.

As an improvement of the utility model, the worm gear assembly and the differential mechanism are located in the middle of the pedal shaft, wherein the planetary bevel gear shaft is located in the central annular cavity of the worm wheel, the structure of the utility model It can ensure the stability of the mechanism's operation.

As an embodiment of the present invention, the worm gear seat and the worm wheel of the worm gear assembly are provided with installation holes perpendicular to the disk surface, and the two are fixed by bolts.

As an improvement of the present utility model, the dual-input worm gear transmission with a differential mechanism further includes a torque sensing mechanism, and the torque sensing mechanism includes a first disc for sensing the positive rotation speed of the pedal shaft and its Hall element, the first disk is set on one end of the pedal shaft, and is opposite to the sprocket, the first disk is embedded with a magnet, and the Hall element is arranged on the housing, so The magnet is opposite to the Hall element, and the Hall element senses the positive rotational speed of the pedal shaft through the magnet, so as to send a control signal to the control circuit. The Hall element of the utility model transmits the control signal to the control circuit, and the control circuit determines the start-up of the electric bicycle motor and the size of the power supply to the motor.

As a further improvement of the utility model, the torque sensing mechanism also includes the second and third discs and their Hall elements for sensing the difference in rotational speed between the pedal shaft and the sprocket, and the second disc is set on the planet frame and is fixedly connected with the planet carrier, the third disk is set on the output sleeve, the two disks are adjacently arranged and are embedded with magnets, the Hall element is arranged on the inner wall of the housing, so The magnet is opposite to the Hall element; the connection between the planet carrier and the output sleeve is a movable connection structure, and the movable connection structure includes a jaw structure and a torsion spring, and the jaw structure is arranged between the planet carrier and the output sleeve On the connecting end face of the barrel, the torsion spring is sleeved on the pedal shaft and located in the output sleeve, one end of the torsion spring is connected with the planet carrier, and the other end is connected with the output sleeve. When the number of revolutions of the cyclist pedaling the pedal shaft increases to the set number of revolutions, the control circuit changes the power supply to the motor to increase the assisting degree of the motor.

As an embodiment of the present invention, the tooth insert structure includes protruding teeth and card slots respectively located on the connecting end faces of the planet carrier and the output sleeve, the protruding teeth are engaged in the card slots, and the protruding teeth and the card slots The edge of the groove has a gap which is the working stroke of the torsion spring. The torsion spring of the utility model is used for detecting the size of the pedal input power, thereby determining the working state of the motor.

As an embodiment of the present utility model, the housing is divided into two halves, which are horizontally butted, and one end of the output sleeve protrudes out of the housing, and the sprocket is fixedly installed at the end of the protruding end. .

Compared with the prior art, the utility model has the advantages of:

(1) The differential mechanism of the utility model can perfectly combine the two kinds of power input of the pedal and the motor drive, and output them to the sprocket uniformly, so that the power can be used more reasonably, and the rider's control of the vehicle can be enhanced. sex;

(2) The torque sensing device of the present utility model uses the control software in the control circuit, in addition to detecting the rotational speed at which the cyclist steps on the pedal, it can also detect the magnitude of the force that the cyclist acts on the pedal, thereby Determine the size of the motor assist, more in line with human needs;

(3) The utility model has two working modes of "flat road" and "uphill" for the rider to choose from. Among them, the "uphill" mode is selected, and the utility model can reduce the total transmission ratio by one time, that is, the output The torque is doubled, so that the vehicle has a greater ability to go uphill;

(4) The utility model has a compact structure and can be directly installed in the modular combined power unit of the existing "double-input worm gear and worm transmission device", without additional installation space;

(5) The utility model is suitable for developing additional functions such as gear shifting, clutch control, power generation exercise bike and the like.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail

Fig. 1 is a sectional view of the utility model;

Fig. 2 is an A-A sectional view of the first ratchet and pawl mechanism;

Fig. 3 is a B-B sectional view of the second ratchet and pawl mechanism;

Fig. 4 is a C-C sectional view of the third ratchet and pawl mechanism;

Figure 5 is a perspective view of the worm gear seat;

Figure 6 is a perspective view of the planet carrier;

Fig. 7 is a perspective view of the planet carrier in another direction;

Figure 8 is a perspective view of the output sleeve;

Fig. 9 is a structural schematic diagram of a planetary bevel gear shaft.

Detailed ways

The specific implementation of the utility model is shown in Figures 1 to 9, a power hybrid input transmission device with a differential mechanism, including a housing, a pedal shaft 6, a sprocket 22, an output sleeve 19 and a worm gear assembly, The housing is divided into two halves, namely a left housing 25 and a right housing 24, which are butted laterally to form the housing. It also includes a differential mechanism, which includes a right differential bevel gear 16, a left differential bevel gear 4, two planetary bevel gears 10 and a planetary bevel gear shaft 11, and the planetary bevel gear shaft 11 passes through the annular hole on the shaft body 31 is sleeved on the middle part of the pedal shaft 6, planetary bevel gears 10 are respectively sleeved on both ends of the planetary bevel gear shaft 11, and left and right differential bevel gears 4, 16 are sleeved on the pedal shaft 6, and are connected with the planetary bevel gears 10 Mesh with each other, wherein the right differential bevel gear 16 is fixedly connected with the pedal shaft 6 through the flat key 17; the pedal shaft 6 is also covered with a worm gear seat 2, the worm gear seat 2 is adjacent to the left differential bevel gear 4, and the worm gear seat 2 and The worm wheel 1 of the worm gear assembly is provided with mounting holes perpendicular to its disk surface, and the two are fixedly connected by bolts. A first ratchet and pawl mechanism is provided between the worm wheel seat 2 and the left differential bevel gear 4. The ratchet and pawl mechanism includes a ratchet 9 and a ratchet. The ratchet is the worm wheel seat 2 and is an inner ratchet. The ratchet 9 is installed on the outer wall of the left differential bevel gear 4, that is, the left differential bevel gear 4 is used as the ratchet. seat.

The pedal shaft 6 is also covered with a planetary carrier 12, which is adjacent to the right differential bevel gear 16. The two ends of the planetary bevel gear shaft 11 are respectively fixed on the planetary carrier 12. At this time, the planetary bevel gear shaft 11 is located at the worm gear 1 In the middle annular cavity, a second ratchet and pawl mechanism is provided between the right differential bevel gear 16 and the planet carrier 12. This mechanism includes a ratchet 21 and a ratchet. The ratchet is the planet carrier 12 and is an inner ratchet. The ratchet 21 is installed on the outer wall of the right differential bevel gear 16, that is, the right differential bevel gear 16 is used as a pawl seat, the output sleeve 19 is set on one end of the pedal shaft, and is supported in the right housing 24 through the bearing 20, One end of the output sleeve 19 protrudes out of the right housing 24 , the sprocket 22 is fixedly mounted on the end of the extended end, and the planet carrier 12 is movably connected with the other end of the output sleeve 19 .

The pedal shaft 6 is also provided with a third ratchet and pawl mechanism for preventing the reverse rotation of the pedal shaft 6. This mechanism includes a ratchet 5, a ratchet 27 and an electromagnet 29 controlled by a control circuit to switch its current on and off. The key 28 is fixedly set on the pedal shaft 6, and is supported in the left housing 25 through the bearing 3. The ratchet 5 is arranged adjacent to the worm wheel seat 2. The ratchet 5 is an external ratchet and is opposite to the sprocket 22. The ratchet 27 passes through the rotating shaft. Fixed on the inner wall of the left housing 25, one side of the ratchet 27 is also provided with an electromagnet 29, and the iron core in the electromagnet 29 can reciprocate horizontally in the coil through the on-off of the current to push the ratchet. 27 engages downwards on the ratchet 5 to prevent the pedal shaft 6 from reversing, and a torsion spring 26 is installed on the rotating shaft to reset as the ratchet 27 .

The utility model also includes a torque sensing mechanism. The torque sensing mechanism includes a first disk 7 and its Hall element 8. The first disk 7 is set on one end of the pedal shaft 6 and is opposite to the sprocket 22. The first A magnet is embedded on the circumference of the disk 7, and the Hall element 8 is located on the end of the left housing 25. The magnet is opposite to the Hall element 8, and the Hall element 8 senses the positive rotation speed of the pedal shaft 6 through the magnet, so that Send a control signal to the control circuit, and the control circuit determines the start-up of the electric bicycle motor and the size of the power supply to the motor; in addition, the torque sensing mechanism also includes the second and third discs 13, 14 and their Hall elements 15, the second disc The disc 13 is set on the planetary carrier 12 and is fixedly connected with the planetary carrier 12 through the mounting holes on the two disc surfaces by bolts, and the third disc 14 is set on the output sleeve 19, and the two discs 13, 14 are adjacent to each other. And magnets are embedded on its circumference, the Hall element 15 is arranged on the inner wall of the right housing 24, and the magnet is opposite to the Hall element 15; And the torsion spring 18, wherein the jaw structure is set on the connecting end surface of the planet carrier 12 and the output sleeve 19, the torsion spring 18 is set on the pedal shaft 6 and is located in the output sleeve 19, one end of the torsion spring 18 is connected to the planet carrier 12 connection, the other end of which is connected to the output sleeve 19. The tooth insert structure includes convex teeth and card slots respectively located on the connecting end faces of the planet carrier 12 and the output sleeve 19. The convex teeth are engaged in the card slots, and the convex teeth and the card slots The edge of the groove has a gap, which is the working stroke of the torsion spring 18 .

The working principle of the torque sensing mechanism of the utility model is: when the torsion spring 18 is not compressed, the magnitude of the magnetic force sensed by the Hall element 15 is the superposition of the magnetic force of the magnets of the second disc 13 and the third disc 14, When the pedal input power overcomes the pre-tightening force of the torsion spring 18, the second disk 13 and the third disk 14 follow the rotation of the planetary carrier 12 and the output sleeve 19 respectively to produce relative angular displacements. The magnetic force has changed from before. After the Hall element 15 senses the change in the magnetic force, it transmits the signal to the control circuit, so that the control circuit changes the size of the power supply to the booster motor, and the Hall element 8 can sense that the pedal shaft 6 is positive. The number of revolutions and speed of rotation, and the signal is transmitted to the control circuit to determine the start of the assist motor and the power supply to the assist motor. Therefore, the torque sensing mechanism can enable the rider to flexibly control the vehicle and determine the power of the motor. The size is more in line with human needs.

The working process of the utility model two working modes is as follows:

1. Select the "flat road" (or "power saving") working mode:

(1) Independent pedal drive: the rider pedals the pedal, the pedal shaft 6 starts to rotate forward, and the right differential bevel gear 16 rotates synchronously through the flat key 17, and the ratchet on the right differential bevel gear 16 The claw 21 drives the planetary carrier 12 to rotate synchronously, the planetary carrier 12 drives the output sleeve 19 through the torsion spring 18, and the sprocket 22 fixedly connected to the output sleeve 19 drives the vehicle forward through the chain, thereby realizing the pedal drive, left Driven by the planetary bevel gear 10, the differential bevel gear 4 also rotates forward, but since the left differential bevel gear 4 and the worm gear seat 2 have the one-way transmission effect of the ratchet 9, it will not drive the worm gear seat 2 and worm gear 1 rotate, and at this time the motor has not started.

(2) Realize motor drive by pedal drive: when the number of revolutions of the rider's pedal reaches the set number of revolutions, the Hall element 8 will input the signal to the control circuit, and the control circuit will supply power to start the booster motor , and according to the improvement of the speed of the pedal shaft 6, the control circuit changes the size of the power supply to the booster motor. After the pedal shaft 6 stops rotating, the control circuit stops power supply after a short time delay set, and the motor automatically stops rotating.

And under the situation that the motor continues to run, when the power of the rider pedaling the pedal is greater than the pre-tightening force of the torsion spring 18 (such as going uphill or accelerating), the distance between the second disc 13 and the third disc 14 will There will be a certain angle of displacement between them, the Hall element 15 senses the change of the magnetic force, so that the signal provided to the control circuit changes, and the control circuit decides to start increasing the power supply to the booster motor, thereby changing the degree of motor assist; the motor speed Increase, the worm gear seat 2 is driven to rotate through the worm gear assembly, and the worm wheel seat 2 drives the left differential bevel gear 4 to rotate forward through the pawl 9. At this time, the planetary bevel gear 10 is simultaneously received by the right differential bevel gear 16 and the left differential bevel gear. Driven by the gear 4, the combined force and speed of the left and right differential bevel gears 4 and 16 drive the planetary carrier 12 to rotate, and the planetary carrier 12 drives the output sleeve 19 to rotate through the torsion spring 18, so that the sprocket 22 drives the chain to drive the vehicle to drive ahead.

2. Select the "uphill" (or "afterburner") working mode:

In this mode, the software program on the control circuit is set to: when the motor reaches the set number of revolutions on the pedal shaft 6 and starts the motor, the motor will obtain a larger power to continue running, and the rider can stop pedaling. Pedal, the running of motor can not stop working because the cyclist stops stepping pedal shaft 6, meanwhile, electromagnet 29, under the power supply of control circuit, promotes ratchet 27 and presses to and blocks ratchet 5, makes The pedal shaft 6 will not rotate backward due to the force of the planetary bevel gear 10; the motor rotates and is driven by the worm gear assembly. Since the right differential bevel gear 16 stops rotating, according to the principle of planetary gear transmission, the planetary bevel gear 10 drives the planetary carrier 12 to rotate forward at 1/2 of the rotational speed of the left differential bevel gear 4, and the planetary carrier 12 passes through the torsion spring 18 Drive the output sleeve 19, and output power to the sprocket wheel 22, the output torque can be doubled. In "electric" mode, the "uphill" (or "afterburner") working mode is terminated.

The utility model can be widely used in various electric boosters such as bicycles, tricycles, four-wheel drive vehicles, and scooters.

The implementation of the utility model is not limited thereto. According to the above content of the utility model, according to the common technical knowledge and conventional means in this field, without departing from the above-mentioned basic technical idea of the utility model, the utility model can also make other Various forms of modification, replacement or change all fall within the protection scope of the utility model.

Claims (10)

1. A power mixing input transmission device with a differential mechanism, comprising a housing, a pedal shaft, a sprocket, an output sleeve and a worm gear assembly, characterized in that: a differential mechanism is also included, and the differential mechanism includes Right differential bevel gear, left differential bevel gear, planetary bevel gear and planetary bevel gear shaft, the planetary bevel gear shaft is sleeved on the pedal shaft through the annular hole on the shaft body, and the planetary bevel gear shaft Planetary bevel gears are set at both ends respectively, and the left and right differential bevel gears are set on the pedal shaft and mesh with the planetary bevel gears, wherein the right differential bevel gear is fixedly connected with the pedal shaft; There is also a worm gear seat, which is adjacent to the left differential bevel gear, and the worm wheel seat is fixedly connected with the worm wheel of the worm gear assembly, and a first ratchet pawl is arranged between the worm wheel seat and the left differential bevel gear mechanism; the pedal shaft is also covered with a planetary carrier, which is adjacent to the right differential bevel gear, and the planetary bevel gear shaft is fixed on the planetary carrier, between the right differential bevel gear and the planetary carrier A second ratchet and pawl mechanism is provided; the output sleeve is sleeved on one end of the pedal shaft, one end of the output sleeve is sleeved with a sprocket, and the other end is connected with the planet carrier. 2 . The power hybrid input transmission device with a differential mechanism according to claim 1 , wherein a third ratchet and pawl mechanism for preventing the pedal shaft from reversing is provided on the pedal shaft. 3 . 3. The power hybrid input transmission device with a differential mechanism according to claim 2, characterized in that: the third ratchet and pawl mechanism includes a ratchet, a pawl and an electromagnet whose current is switched on and off by a control circuit, The ratchet is fixedly sleeved on the pedal shaft and is adjacent to the worm wheel seat. The ratchet is an external ratchet and is opposite to the sprocket. The ratchet is fixed on the inner wall of the housing through a rotating shaft. The electromagnet It is arranged on one side of the ratchet, and the iron core in the electromagnet reciprocates horizontally in the coil through the on-off of the current, so as to push the ratchet to engage with the ratchet or disengage from the ratchet. 4. The power hybrid input transmission device with a differential mechanism according to claim 1, characterized in that: the first ratchet and pawl mechanism includes a ratchet and a ratchet, and the ratchet is a worm wheel seat and is an inner ratchet , the pawl is installed on the outer wall of the left differential bevel gear, that is, the left differential bevel gear is used as the pawl seat. 5. The power hybrid input transmission device with a differential mechanism according to claim 1, characterized in that: the second ratchet and ratchet mechanism includes a ratchet and a ratchet, and the ratchet is the planetary carrier and is an inner ratchet , the pawl is installed on the outer wall of the right differential bevel gear, that is, the right differential bevel gear is used as the pawl seat. 6. The power hybrid input transmission device with a differential mechanism according to claim 1, characterized in that: the worm gear assembly and the differential mechanism are both located in the middle of the pedal shaft, wherein the planetary bevel gear shaft Located in the middle annular cavity of the worm wheel. 7. The power mixing input transmission device with a differential mechanism according to claim 1, characterized in that: the worm gear seat and the worm wheel of the worm gear assembly are provided with mounting holes perpendicular to the disk surface, and Fastened by bolts. 8. The power hybrid input transmission device with a differential mechanism according to claim 1, characterized in that: the dual-input worm gear transmission device with a differential mechanism further includes a torque sensing mechanism, and the torque sensor The mechanism includes the first disk and its Hall element for sensing the positive rotation speed of the pedal shaft. The first disk is set on one end of the pedal shaft and is opposite to the sprocket. The first disk is embedded There is a magnet, and the Hall element is arranged on the housing, and the magnet is opposite to the Hall element, and the Hall element senses the positive rotational speed of the pedal shaft through the magnet, so as to send a control signal to the control circuit. 9. The power hybrid input transmission device with a differential mechanism according to claim 8, characterized in that: the torque sensing mechanism further includes second and third circles for sensing the difference between the rotation speed of the pedal shaft and the sprocket disc and its Hall element, the second disc is set on the planet carrier and fixedly connected with the planet carrier, the third disc is set on the output sleeve, and the two discs are set adjacent to each other and are both embedded There is a magnet, and the Hall element is arranged on the inner wall of the housing, and the magnet is opposite to the Hall element; the connection between the planet carrier and the output sleeve is a movable connection structure, and the movable connection structure includes an interlocking structure and a torsion spring, the jaw structure is arranged on the connecting end surface of the planet carrier and the output sleeve, the torsion spring is set on the pedal shaft and located in the output sleeve, one end of the torsion spring is connected to the planet carrier, and The other end is connected with the output sleeve. 10. The power hybrid input transmission device with differential mechanism according to claim 9, characterized in that: the tooth insert structure includes convex teeth and slots respectively located on the connecting end faces of the planet carrier and the output sleeve, and the The convex tooth is engaged in the slot, and there is a gap between the convex tooth and the edge of the slot, and the gap is the working stroke of the torsion spring.

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